At the urging of her husband, Makoto, Aoi visits her father-in-law's house alone.Then her father-in-law, Ryozo, who has returned home in an celibate state after three months of tuna fishing, appears.Misunderstood as a housekeeper, Aoi is unable to resist Ryozo's ferocious desires and is forced into his arms.Aoi falls in love with her father-in-law's savage stamina that her husband lacks, as well as her father-in-law's cheerfulness as he serves her freshly caught fish.Taking advantage of Makoto's absence, she sinks into a sea of immorality, and three months later, without hesitation, she heads back to her father-in-law, who is waiting for her with lust.
